How many children did King Richard the Lion heart have?

Answer 1

Richard I did not have any legitimate children. He acknowledged one illegitimate son, Philip of Cognac whose mother was never identified. He was probably born in the late 1180s, and likely died prior to 1210.

Roger of Hoveden, a chronicler during the late 1190s-early 1200-10, claimed that Richard I was killed by his illegitimate son, Philip of Cognac, during Richard's siege of the Chateau de Chalus-Chabrol, the castle at Limousin. The story was then the subject of a play by William Shakespeare titled "Bastard of Falconbridge". It is unlikely that Philip killed his father, as most historians agree that Richard was hit in the neck by a crossbow, when he placed the Chateau de Chalus-Chabrol, which was fired by Pierre Basile.

Source:

"Richard the Lionheart" by Anthony Bridge